Liquid Crystal Display Gate Circuit Between Sealants

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Solution Overview

Problem

Conventional liquid crystal displays face reliability issues and damage to sealants as the size increases, leading to defects and corrosion of circuit components.

Innovation Solution

The implementation of a liquid crystal display design with spaced apart sealants and a gate driving circuit portion between them, along with a connecting member and insulating layers to protect exposed signal lines and electrodes, preventing damage and corrosion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the size of liquid crystal displays is increased, then the display area is enlarged, but the sealant becomes stressed and damaged

Engineering Contradiction:

Improvedisplay areaVSAvoidsealant integrity

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The sealant structure is segmented into multiple separate sealants (first sealant, second sealant, third sealant) positioned at different locations around the display area. This segmentation distributes the mechanical stress that would otherwise concentrate on a single continuous sealant, preventing stress-induced damage while maintaining the ability to seal larger display areas.

Inventive Principle:

Principle #1Segmentation

2Area of stationary object

If the size of liquid crystal displays is increased, then the display area is enlarged, but circuit corrosion occurs due to sealant damage

Engineering Contradiction:

Improvedisplay areaVSAvoidcircuit corrosion

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The circuit portion is enclosed within a region bounded by multiple sealants before the display is assembled and sealed. This preliminary positioning ensures that circuits are protected from moisture and contaminants by the sealant barrier from the outset, preventing corrosion that would otherwise occur due to sealant failure in larger displays.

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If sealants are placed close together, then the structure is compact, but circuits exposed between sealants are vulnerable to corrosion

Engineering Contradiction:

Improvestructural compactnessVSAvoidcircuit corrosion

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

An insulating layer is introduced as an intermediary element between the sealants and the circuit portions. This insulating layer covers and protects the circuits that are necessarily exposed in the regions between sealants, preventing direct contact with moisture and contaminants while allowing the sealants to remain positioned for structural compactness.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS8896799B2Liquid crystal display including circuitry between sealants

Publication Date: 2014.11.25 LONESTAR CRYSTAL DISPLAY LLC

AI summary

A liquid crystal display includes a first substrate, a second substrate, a first sealant, a second sealant, and a gate driving circuit portion. The second substrate faces the first substrate. The first substrate and the second substrate have a display area and a peripheral area peripherally about the display area. The second sealant is spaced apart from the first sealant. The second sealant is disposed in the peripheral area. The gate driving circuit portion is disposed on the first substrate and between the first sealant and the second sealant.